✍ Scribed by R. Compañó; M. Granados; C. Leal; M.D. Prat
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An ion-exchange chromatographic method for the analysis of triphenyltin in water samples was developed. Detection is based on the highly sensitive fluorogenic reaction between triphenyltin and 3-hydroxyflavone in a micellar medium of Triton X-100. A linear calibration graph in the range 0.1-5.0 pg 1-l Sn as triphenyltin was obtained. The detection limit was 0.02 ng for 200 ~1 of sample injected. Short-term precision was 4.5% at 0.5 pg 1 -'. With a preconcentration step by solid-phase extraction on C,, cartridges, concentration factors of about 250 were achieved. The method was applied to the determination of triphenyltin in harbour water at low ng 1-l levels.
📜 SIMILAR VOLUMES
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